17 April 1916 – 21 February 1918 X2A Medium Trench Mortar Battery 17 April 1916 – 21 February 1918 Y2A Medium Trench Mortar Battery 17 April 1916 – 21 February 1918 Z2A Medium Trench Mortar Battery 17 April 1916 – 21 February 1918 3rd Medium Trench Mortar Battery 21 February 1918 – past November 1918 4th Medium Trench Mortar Battery 21 February 1918 – past November 1918 3rd Division Artillery Formed February 1916 for 3rd Division Subunits: 3rd Division Ammunition Column February 1916 – past November 1918 7th Field Artillery Brigade February 1916 – past November 1918 25th Field Artillery Battery 26th Field Artillery Battery 27th Field Artillery Battery 107th Field Artillery (Howitzer) Battery 7th Brigade Ammunition Column 8th Field Artillery Brigade February 1916 – past November 1918 29th Field Artillery Battery 30th Field Artillery Battery 31st Field Artillery Battery 108th Field Artillery (Howitzer) Battery 8th Brigade Ammunition Column 9th Field Artillery Brigade February 1916 – 6 January 1917 33rd Field Artillery Battery 34th Field Artillery Battery 35th Field Artillery Battery 118th Field Artillery (Howitzer) Battery 9th Brigade Ammunition Column 23rd Field Artillery (Howitzer) Brigade February 1916 – 6 January 1917 28th Field Artillery Battery 32nd Field Artillery Battery 36th Field Artillery Battery 109th Field Artillery (Howitzer) Battery 23rd Brigade Ammunition Column V3A Heavy Trench Mortar Battery August 1916 – 21 February 1918 X3A Medium Trench Mortar Battery August 1916 – 21 February 1918 Y3A Medium Trench Mortar Battery August 1916 – 21 February 1918 Z3A Medium Trench Mortar Battery August 1916 – 21 February 1918 5th Medium Trench Mortar Battery 21 February 1918 – past November 1918 6th Medium Trench Mortar Battery 21 February 1918 – past November 1918 4th Division Artillery Formed Egypt February 1916 for 4th Division Subunits: 4th Division Ammunition Column February 1916 – past November 1918 10th Field Artillery Brigade February 1916 – past November 1918 37th Field Artillery Battery 38th Field Artillery Battery 39th Field Artillery Battery 110th Field Artillery (Howitzer) Battery 10th Brigade Ammunition Column 11th Field Artillery Brigade February 1916 – past November 1918 41st Field Artillery Battery 42nd Field Artillery Battery 43rd Field Artillery Battery 111th Field Artillery (Howitzer) Battery 11th Brigade Ammunition Column 12th Field Artillery Brigade February 1916 – 20 January 1917 45th Field Artillery Battery 46th Field Artillery Battery 47th Field Artillery Battery 101st Field Artillery (Howitzer) Battery 119th Field Artillery (Howitzer) Battery 12th Brigade Ammunition Column 24th